Software Engineer

The Role

We're looking for a Software Engineer to join our Data Products team and help shape how critical Fixed Income data is built, managed, and delivered — to external clients and partners around the world. A key part of the role is evolving client-facing web UIs that make these data products easy to discover, understand, and use. You'll work on delivering high-quality data products that clients depend on for trading and analytics, from backend to frontend, as well as from ingestion to analytics and distribution. If you're curious about financial markets, enjoy solving hard problems end-to-end (from UI to data), and want to own something that reaches beyond the firm's walls, this role is for you. 

How You'll Help Take Us There

Web UI: 

• Own and evolve client-facing web frontends built with AngularJS and JSP; modern JavaScript or React experience is a plus. 
• Build and maintain backend data services required by those frontends, including analytics, caching and other integrations. 
• Partner with data platform, information security, QA and test automation engineers to deliver and maintain  intuitive, secure and compliant workflows for internal and external data discovery and consumption. 

Data Engineering & Integration: 

• Design and build data pipelines for ingestion, transformation, and distribution using Java, Python, and SQL. 
• Implement asynchronous and concurrent patterns for high-throughput systems. 
• Work with streaming technologies — Kafka and JMS — for real-time and event-driven data delivery. 
• Primarily use Java to build these pipelines but also Python data libraries (Pandas, Polars, NumPy) for data wrangling and exploratory analysis where applicable. 

Data Products & Reference Data: 

• Contribute to instrument, market data and general reference data pipelines— helping establish a trusted, authoritative source for Fixed Income reference data delivered to clients. 
• Build and maintain data products that external clients and partners rely on — quality, reliability, and timeliness. 

Cloud & Infrastructure: 

• Build and maintain AWS-based data products using, among other services: ECS / EKS, Step Functions, S3, Athena, Aurora, MSK and CloudFormation. 
• Follow security and observability best practices — IAM, KMS encryption, CloudWatch, Grafana. Apply and maintain strict cost management best practices, including optimizing data storage strategies (partitioning, bucketing) for performance and cost. 

Software Engineering & CI/CD: 

• Contribute to automated build, test, and deploy pipelines using Jenkins, Bitbucket, and GitHub.
• Write clean, modular, well-tested code — unit and integration tests are part of the definition of done.
• Instrument systems with monitoring and alerting; own the reliability of what you ship.  

Collaboration & Innovation: 

• Partner closely with Development, Product, and Infrastructure teams — and stay mindful of the client experience your work supports.
• Leverage AI-assisted development tools (e.g., GitHub Copilot) to work smarter and move faster.
• Bring intellectual curiosity and a genuine interest in understanding the Fixed Income domain — we'll help you get there. 

What We’re Looking for  

• 4+ years of software engineering experience. 
• Proven experience building and maintaining production web UIs (AngularJS, JSP or similar). Experience migrating UIs to a more modern JavaScript framework (React, Vue, or similar) is beneficial. 
• Strong Java skills; solid SQL; Python experience (especially for data analysis and scripting) is a plus. 
• Experience with Spring Boot or similar backend frameworks. 
• Experience with frontend testing practices and tools (unit / integration / end-to-end). 
• Experience with UI performance best practices including performance profiling and optimization. Experience working with event-driven or streaming systems (Kafka, JMS, or similar). 
• Hands-on experience with AWS (ECS / EKS, Step Functions, S3, Athena, Aurora, or equivalent cloud services). 
• Familiarity with CI/CD practices and tooling (Jenkins, Bitbucket, GitHub). 
• Comfortable working in Unix/Linux environments, including scripting skills. 
• Confident using AI tools as part of your development workflow. 
• Strong communicator, collaborative by default, and eager to learn. 
• Interest in financial markets — Fixed Income experience not required, but curiosity is. 

What You Can Expect from Us

• Hybrid Environment: Our employees enjoy a mix of working in the office and from home
• Free Food: We provide free lunch for employees when they are working in the office. Plus, our offices are stocked with snacks
• Paid Time Off: Competitive PTO package including vacation and personal days, sick leave and charity days
• Generous Parental Leave: Up to 20 weeks fully paid leave
• 401(k): Dollar-for-dollar employer match up to $17,500
• Employee Stock Purchase Plan: Employees can purchase MarketAxess common stock at a discount
• Wellness Stipend: We provide employees with up to $1K annually towards gym memberships, home office equipment and more
• Onsite Healthcare: We offer convenient access to world-class care through Mount Sinai at our Hudson Yards location
• Tuition Assistance and Professional Development: Benefit from live and on-demand learning, role-specific training, employee-led Lunch and Learns and guest speakers
• Core benefits: Highly competitive medical, dental, and vision programs

For job positions in NYC, NY, and other locations where required, the estimated salary range for a new hire into this position is $110,000 USD to $165,000 USD. Actual salary may vary depending on job-related factors, which may include knowledge, skills, experience, and location. You may also be eligible for annual cash incentives, equity, and other benefit programs.

MarketAxess Corporation and its affiliates provide equal employment opportunities to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, veteran status, or any other legally protected characteristic in the location in which the candidate is applying.

All of your information will be kept confidential according to EEO guidelines.